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SC806Hardware User ManualPage18 of 70
DI
Digital input
DO
Digital output
PI
Power input
PO
Power output
AI
Analog input
AO
Analog output
OD
Open drain
The SC806’s pin functions and electrical characteristics are described in the following table:
Table4Pin description
Power
Pin Name
Pin No.
I/O
Pin Description
Note
VBAT_BB
1,2
PI
Baseband power input
Input voltage range: 3.3 ~ 4.5V, recommend
3.8V
VBAT_RF
145,146
PI
RF power input
Voltage range: 3.3 ~ 4.5V, recommend 3.8V
VDD_1V8_L5
111
PO
1.8Vvoltage output
Drive current200mA
VDD_1V8_L6
125
PO
1.8V voltage output
Drive current200mA
VDD_2V85_L17
129
PO
2.85V voltage output
Drive current420mA
VDD_SD_L12
32
PO
SD card pull-up resistor
power supply, 2.95V
Drive current50mA
VDD_SD_L11
38
PO
SD card power supply,
2.95V
Drive current600mA
VDD_USIM1_L14
26
PO
SIM card 1 power supply
2.95/1.8 Vadjustable, 55mA
VDD_ USIM2_L15
21
PO
SIM card 2 power supply
2.95/1.8 Vadjustable, 55mA
VRTC
126
I/O
RTC clock power supply
pin
Voltage range: 2.0 ~3.25V, recommend 3.0 V
GND
3,7,12,15,27,51,62,
Ground